Contrivance for theaters and cinematographs



P. SCHWEYER.

CONTRIVANCE FOR THEATERS AND CINEMATOGRAPHS.

APPLICATION FILED MAY 4 Patented Nov. 14, 1922.

[1L5 AHorne Piatent d Nov. 14, 1922.

PAUL SCHWEYER, 0F MUNICH, GERMANY.

CONTRIVA'NGE FOR THEATERS AND CINEMATOGRAPHSL Application filed May 4, 1922. Serial No. 558,511.,

To all whom it may concern:

Be it known that I, Dr. PAUL SOHWEYEB, citizen of Germany, residing at Munich, Bavaria, Germany, have invented certain new and useful Improvements in Contrivances for Theaters and Cinematographs; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the artto which it appertains to make and use the same.

This invention relates to an improved system of transmitting intelligence from a stage to the audience.

It has been heretofore suggested to provide acoustical transmitting means such as telephone transmitters and receivers for the purpose of conveying intelligence from a stage to an audience. The drawback of such arrangements consists in this that the telephone transmitters, being provided on the stage, all the sounds produced on the stage were telephonically transmitted to the audience whereby, in the case of auditors located in the theater at a distance from the stage, the telephonically transmitted sound reached their ears sooner than the sounds propagated through the air, resulting in obvious confusion.

The short comings of such systems were particularly noticeable in the case of musical performances. As well known, the transmission of musical tones through telephone transmitting and receiving apparatus results in distortion of the tones produced and does not have the same pleasin effect as the propagation of musical tones t rough the air. 0th the music and speech being transmitted through the telephonic apparatus of such systems of the prior art, the auditors lost the enjoyment of listening to music as performed by orchestras or singers.

In accordance with the present invention,

the disadvantages of the systems of the prior art are done away with by permitting the audience tolisten to the music and son propagated through the air, but ren ering spoken words or the text of songs more intelligible to the auditors, by telephonically relaying such information to them from a source other than the stage.

An embodiment of the invention is schematically illustrated in the drawing.

a is the stage on which a telephone transmitter e is provided. This transmitter is connected through a circuit h M, k with a pair of receivers f-f, current being supplied from battery 9. The receivers are located in a sound-proof chamber 1) provided with a window b An operator 0 in this chamber is thus acoustically and visually ap prized of the happenings on stage a. The operator may relay certain words or whole texts to the auditors d seated in the theater through the agency of transmitter 71, circuit m m m battery 1, and receivers K.

The auditors may thus freely enjoy the music and still understand the words spoken or sung on the stage or obtain other necessary information.

What I claim is:

In combination, a stage, a plurality of seats, a sound proof chamber, a window in said chamber overlooking the stage, a transmitter on the stage, a receiver inthe chamber, a circuit between said transmitter and receiver, a transmitter in said chamber, receivers at said seats, and circuits between the transmitter in the chamber and the receivers at the seats.

In testimony whereof I hereunto afiix my signature in the presence of \two witnesses.

Pnornsson DR. PAUL SCHWEYER.

Witnesses:

ALEX PHILIPPOFF, ALEXANDER DE Lo'ro. 

